﻿using IOP.Extension.DependencyInjection;
using IOP.SgrA;
using IOP.SgrA.SilkNet.Vulkan;
using Microsoft.Extensions.Logging;
using Silk.NET.Vulkan;
using System;

namespace VkSample113;

public class Middleware : IProductionLineMiddleware<SecondaryVulkanRenderGroup>
{
    [Autowired]
    private ILogger<Middleware>? _Logger { get; set; }

    public void Invoke(SecondaryVulkanRenderGroup group, RenderingProductionLineDelegate<SecondaryVulkanRenderGroup> next)
    {
        try
        {
            var camera = group.Camera;
            var view = camera.ViewMatrix;
            var project = camera.ProjectionMatrix;
            var cmd = group.SecondaryCommandBuffer;

            CommandBufferInheritanceInfo info = new CommandBufferInheritanceInfo
            {
                Framebuffer = group.Framebuffer.RawHandle,
                OcclusionQueryEnable = false,
                RenderPass = group.RenderPass.RawHandle,
                Subpass = 0
            };
            cmd.Reset();
            cmd.Begin(CommandBufferUsageFlags.CommandBufferUsageOneTimeSubmitBit |
                CommandBufferUsageFlags.CommandBufferUsageRenderPassContinueBit, info);
            cmd.BindPipeline(PipelineBindPoint.Graphics, group.Pipeline);

            var viewPort = camera.Viewport;
            var scissor = camera.Scissor;
            cmd.SetViewport(new Viewport(viewPort.X, viewPort.Y, viewPort.Width, viewPort.Height, viewPort.MinDepth, viewPort.MaxDepth));
            cmd.SetScissor(new Rect2D(new Offset2D(scissor.X, scissor.Y), new Extent2D(scissor.Width, scissor.Height)));

            foreach (var item in group.GetContexts())
            {
                item.SetViewMatrix(in view);
                item.SetProjectionMatrix(in project);
                item.SetCamera(camera);
                group.ItemProductionLine(item);
            }

            foreach(var item in group.GetChildrens())
            {
                item.GroupRendering();
            }

            cmd.End();
        }
        catch (Exception e)
        {
            _Logger.LogError(e.Message + "\r\n" + e.StackTrace);
            group.Disable();
        }
    }
}
